• High borosilicate glass
• When you place this on a table, the blades will turn when exposed to sunlight or artificial light
• This crookes is made of high borosilicate glass, which is transparent and clear in appearance, and the inner rotating blades can be seen
• This uses the principle of light energy and is a good physics teaching tool
• This can be used as a teaching device for solar science experiments, and students will feel very interesting in the learning process
• This can be used as a window sill decoration at home or as a holiday , with a simple design and a beautiful look